Question
A body of mass 2kg is placed on a horizontal frictionless surface. It is connected to one end of a spring whose force constant is 250N / m . The other end of the spring is joined with the wall. A particle of mass 0.15kg moving horizontally with speed v sticks to the body after collision. If it compresses the spring by 10cm , the velocity of the particle is
Options :
3 m/s
5 m/s
10 m/s
15 m/s
Answer :
15 m/s
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